401667492 has 24 divisors (see below), whose sum is σ = 977973696. Its totient is φ = 128067808.

The previous prime is 401667491. The next prime is 401667503. The reversal of 401667492 is 294766104.

It is a happy number.

It is a super-2 number, since 2×401667492² = 322673548259140128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401667492.

It is not an unprimeable number, because it can be changed into a prime (401667491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727383 + ... + 727934.

It is an arithmetic number, because the mean of its divisors is an integer number (40748904).

Almost surely, 2^401667492 is an apocalyptic number.

It is an amenable number.

401667492 is an abundant number, since it is smaller than the sum of its proper divisors (576306204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401667492 is a wasteful number, since it uses less digits than its factorization.

401667492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455347 (or 1455345 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 401667492 is about 20041.6439445471. The cubic root of 401667492 is about 737.8287291394.

The spelling of 401667492 in words is "four hundred one million, six hundred sixty-seven thousand, four hundred ninety-two".